The Lions boast maybe the best duo of RB's in the NFL. While Jahmyr Gibbs has been remarkably healthy, his counterpart David Montgomery is coming off a knee injury. Health is always a concern at this position because any injury to any body part can be hard to play through.

With NFL training camp season upon us, Kevin Patra provides a refresher on the Detroit Lions' roster changes, position battles and notable subplots.

The Chicago Bears and the New York Jets did just that, snatching up former Detroit Lions OC Ben Johnson and ex-DC Aaron Glenn to fill their respective head coaching vacancies. So where does that leave the Lions? Hell if we know—which is why their training camp is going among the NFC’s can’t-missers.